Figure 15. Modeled downstream thermal effects of dams on the entire Willamette River, Oregon, June–October 2001 and April–October 2002. Temperature changes in this figure are the difference in the modeled 7dADM temperatures for Natural Thermal Potential conditions with upstream dams minus the modeled 7dADM temperatures without upstream dams. The McKenzie, Long Tom, Santiam, and Clackamas Rivers join the Willamette River at river miles 174.9, 149.4, 108.5, and 24.9, respectively.

First posted August 17, 2010